<!-- Licensed under a BSD license. See license.html for license -->
<!DOCTYPE html>
<html>
  <head>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0, user-scalable=yes">
    <title>Three.js - Primitives</title>
    <style>
    html, body {
        height: 100%;
        margin: 0;
    }
    #c {
        width: 100%;
        height: 100%;
        display: block;
    }
    </style>
  </head>
  <body>
    <canvas id="c"></canvas>
  </body>
<script type="importmap">
{
  "imports": {
    "three": "../../build/three.module.js",
    "three/addons/": "../../examples/jsm/"
  }
}
</script>

<script type="module">
import * as THREE from 'three';
import { FontLoader } from 'three/addons/loaders/FontLoader.js';
import { TextGeometry } from 'three/addons/geometries/TextGeometry.js';

function main() {

	const canvas = document.querySelector( '#c' );
	const renderer = new THREE.WebGLRenderer( { antialias: true, canvas } );

	const fov = 40;
	const aspect = 2; // the canvas default
	const near = 0.1;
	const far = 1000;
	const camera = new THREE.PerspectiveCamera( fov, aspect, near, far );
	camera.position.z = 40;

	const scene = new THREE.Scene();
	scene.background = new THREE.Color( 0xAAAAAA );

	{

		const color = 0xFFFFFF;
		const intensity = 3;
		const light = new THREE.DirectionalLight( color, intensity );
		light.position.set( - 1, 2, 4 );
		scene.add( light );

	}

	{

		const color = 0xFFFFFF;
		const intensity = 3;
		const light = new THREE.DirectionalLight( color, intensity );
		light.position.set( 1, - 2, - 4 );
		scene.add( light );

	}

	const objects = [];
	const spread = 15;

	function addObject( x, y, obj ) {

		obj.position.x = x * spread;
		obj.position.y = y * spread;

		scene.add( obj );
		objects.push( obj );

	}

	function createMaterial() {

		const material = new THREE.MeshPhongMaterial( {
			side: THREE.DoubleSide,
		} );

		const hue = Math.random();
		const saturation = 1;
		const luminance = .5;
		material.color.setHSL( hue, saturation, luminance );

		return material;

	}

	function addSolidGeometry( x, y, geometry ) {

		const mesh = new THREE.Mesh( geometry, createMaterial() );
		addObject( x, y, mesh );

	}

	{

		const loader = new FontLoader();
		// promisify font loading
		function loadFont( url ) {

			return new Promise( ( resolve, reject ) => {

				loader.load( url, resolve, undefined, reject );

			} );

		}

		async function doit() {

			const font = await loadFont( '/examples/fonts/helvetiker_regular.typeface.json' ); /* threejs.org: url */
			const geometry = new TextGeometry( 'three.js', {
				font: font,
				size: 3.0,
				depth: .2,
				curveSegments: 12,
				bevelEnabled: true,
				bevelThickness: 0.15,
				bevelSize: .3,
				bevelSegments: 5,
			} );

			addSolidGeometry( - .5, 0, geometry );

			const mesh = new THREE.Mesh( geometry, createMaterial() );
			geometry.computeBoundingBox();
			geometry.boundingBox.getCenter( mesh.position ).multiplyScalar( - 1 );

			const parent = new THREE.Object3D();
			parent.add( mesh );

			addObject( .5, 0, parent );

		}

		doit();

	}

	function resizeRendererToDisplaySize( renderer ) {

		const canvas = renderer.domElement;
		const width = canvas.clientWidth;
		const height = canvas.clientHeight;
		const needResize = canvas.width !== width || canvas.height !== height;
		if ( needResize ) {

			renderer.setSize( width, height, false );

		}

		return needResize;

	}

	function render( time ) {

		time *= 0.001;

		if ( resizeRendererToDisplaySize( renderer ) ) {

			const canvas = renderer.domElement;
			camera.aspect = canvas.clientWidth / canvas.clientHeight;
			camera.updateProjectionMatrix();

		}

		objects.forEach( ( obj, ndx ) => {

			const speed = .5 + ndx * .05;
			const rot = time * speed;
			obj.rotation.x = rot;
			obj.rotation.y = rot;

		} );

		renderer.render( scene, camera );

		requestAnimationFrame( render );

	}

	requestAnimationFrame( render );

}

main();
</script>
</html>
